This userscript allows you to change your agarplus skin to multiple images per given interval.

To change the skins and interval:

First click on your tampermonkey/greasemonkey and select dashboard (http://i.imgur.com/z86aDFj.png).

Second click on Skin Changer for agarplus.io. (http://i.imgur.com/E9IwhbZ.png)

Finally you can edit the interval milliseconds (1 second = 1000 milliseconds) and the skins array by surrounding them with quotation marks and separating them with coma. (http://i.imgur.com/HNpMVQo)